Gyro Sensor!!

Hi,

I dont think those are floating values. the values vary from 250-285, when I try to rotate them. And when I unplug them, the pins read 0 for a sec and goes back to 145 and again to 272 and from there, I get a constant 270-278 values. Am not really sure if these are the values from gyro. And even if these are the values from this gyro, I can possibly do nothing with this 250-285 range. Please suggest.

Thank you
FelixFelicis